Welcome and congratulations, JaneLouise! Wishing you an uneventful and boring pregnancy.
I had my DS at 39, and there is no reason why it should not be an uncomplicated, normal pregnancy, as jass so rightly said. A lot of women are having children at that age, it's not a big deal anymore. You won't really get any more care because of your age, sorry
.
There is a greater risk due to age, but there is nothing you can do about that, so you will just have to accept this - at some point, you will have to decide if/what tests you want to do, usually at the time of your 12-week scan. You might want to look into the Harmony test, if you are worried about the risk for Downs/Edwards/Patau's - a non-invasive test, where they can check for chromosomal abnormalities with almost 100% certainty. But you'll have to do this privately, and it's not cheap.
If there are no complications, then tbh, I don't see what a private scan would do to help... Sorry, I'm a bit pragmatic when it comes to scans - they are no guarantee for a good outcome and can often cause more worry than help. If there are complications, you will be offered extra scans on the NHS.
So for now, try to relax and enjoy! There are a lot of pregnancy forums here - the 40+ pregnant one has been very very quiet, but maybe you want to revive it?!
Oh, and here I am directly contradicting the lovely jass (but I know she won't mind
) - stop testing. There is no point. A line is a line is a line... No test can tell you more than that. Right here, right now, you are pregnant 
Hello, everyone else! I've not been feeling great in the last few days, emotionally, and my mum visiting did not help... I'm struggling with the thought that I would have been about to start mat leave now
I'm also struggling to communicate with DH about how I feel - I want him to be more involved with the whole ttc, but at the same time, don't want to put too much pressure on him either - it's bad enough me obsessing about it all the time. But I'm getting increasingly angry and frustrated with/at him... Sigh. I'm not good at starting 'difficult' conversations, never have been. I think that, deep down, I'm worried that he will turn around and say that he doesn't want to ttc anymore, and that thought scares me more than anything else.